1202Lssn3.ppt

7/23/2019 1202Lssn3.ppt

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1202 CDMA RF Optimization

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the written consent of Nortel Networks, given by contract or otherwise, this

document must not be copied, reprinted or reproduced in any material form,

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whatsoever.

DataDataCollectionCollection

Lesson #3Lesson #3

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1202 CDMA RF Optimization - 2

Lesson Objectives

Upon completion of this lesson, the student will be able to:

• Define the measurement basis behind ke !" performanceindicators

• Describe simulated loadin techni$ues for the forward link%

• &'plain the basic concepts and procedures of mobile drive

testin%

• Describe ()( loin concepts and strateies used durin

drive testin%

• Define an effective data collection strate%

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Lesson Objectives *cont%+

Upon completion of this lesson, the student will be able to:

• Create loin templates%

• (tart and suspend ()( los%

• Upload, cop, and terminate ()( los%

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!" erformance -ndicators

• Certain CD./ measurements are basic

indicators of the condition of the !"environment%

— These 6 are primary gauges used to drive CDMA

RF Optimization:

– Frame rror Rate !FR"

– Mo#i$e Re%eive &o'er

– &i$ot (trength !%)*o"

– Mo#i$e Transmit &o'er !T+&O"

– Transmit ,ain Ad-ust

– ').o (etpoint

These are just a

few of themeasurements

that should be

taken during

data collection.

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• "rame &rror !ate

— /pressed as a per%entage— 0sed as a %a$$ 1ua$ity

statisti%

— Measured on #oth the

2or'ard and reverse $in3s

— 4igh FR norma$$y attri#uted

to poor %overage or high inter2eren%e

• .obile !eceive ower

— /pressed in d5m

— Derived 2rom Mo#i$es A,C

Cir%uitry

— &oor re%eive po'er norma$$y

attri#uted to poor %overage

"&!0

1 2 411

!5 Level

671

681

641

7 7 t o o ' e a 3

o v e r $ o a d 8 8

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• ilot (trenth *&c9-o+

— The ratio o2 the average energyper %hip 2or the desired pi$ot signa$

to tota$ signa$ and inter2eren%e9

— /pressed in d59

— Measures the %$eanness; o2

the pi$ot 'hi%h< in turn 2orete$$s

the reada#i$ity o2 the asso%iated

tra22i% %hanne$s

Ec/Io values can

be collected forone or multiple

pilots to include

composite Ec/Io

measurements

&C 9-1 d)

62 64 641 1

&C

-1

/verae ener per chip

for the desired

pilot channel

otal received power

spectral densit, includin

sinal and interference,

as measured at the

.obile (tation

antenna connector

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http://slidepdf.com/reader/full/1202lssn3ppt 7/221202 CDMA RF Optimization - 7


• .obile ransmit ower *5O+

— /pressed in d5m— =a$ue in%$udes initia$

po'er va$ue p$us po'er

in%rements asso%iated

'ith %$osed>$oop po'er %ontro$

— An in%reasing T+&O norma$$yindi%ates the mo#i$es is 'or3ing

harder to maintain the reverse

$in3

• ransmit ;ain /djust *5;/+

— The sum o2 a$$ %$osed $oop

po'er %ontro$ %ommands 2rom

the 5T( sin%e the #eginning

o2 the %a$$

An increasing

TXP causesthat mobile to

be a stronger

interferer to

other mobiles.

pical 5O:<23 d)m in a coverae hole

1 d)m near middle of cell

61 d)m up close to )(

5O = 6*!5+ < C < 5;/C = 6>3 for ?11 .@A% sstems

= 6>B for 4811 .@A% sstems

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(imulated Loadin

• Orthoonal Channel oise (ource

*OC(+— (tandard data2i$$ reserves ? %hanne$ e$ements per

se%tor 2or OC.(

— Mu$tip$e users %an #e simu$ated on these ?

e$ements

— *t is re%ommended that one pass through the

net'or3 or %$uster #e per2ormed 'ithout OC.(

$oading9

!"# is used to

simulate

planned traffic

loading during

drive testing.

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Drive estin 6 Data Collection ools

LCC

(tand>a$onemo#i$e%o$$e%tion unit

addition toe/isting AM&()DAM&(R(AT produ%t

$ine &ost>%o$$e%tion

ana$ysisso2t'are e/ists

QualComm

.D.$ obile

%iagnostic $ onitor

The o$destmo#i$e too$<avai$a#$esin%e ear$ytria$s

0seshandset and

&C 2or data%o$$e%tion

&ost>pro%essingtoo$ ODA has#een $ongavai$a#$e

GraysonCDMA

Surveyor, Analyzer

Mo#i$e too$%o$$e%ts dataon &C 'ithrea$timedisp$ay andmapping

Ana$yzer;

post>pro%essingtoo$ providesadvan%edstatisti%s<event andmessage mapdisp$ay

SAFCOOPAS3

Mo#i$e%o$$e%tion too$e/pands(mart(AM)&ROMA(produ%t $ine

O&A(@? post>

pro%essingso2t'are givesadvan%edstats< eventand messagemap disp$ay

Comarco

Mo#i$e%o$$e%tionunitprovidesrea$>timedisp$ay on&C%o$$e%tor

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Drive estin 6 ualcomm .D.

• ualcommEs .obile Dianostic .onitorwas the first commerciall6available CD./mobile data capture tool% -t includes:

—CDMA handset !%ustomer provided"

—&roprietary %onne%ting %a#$e

—&C so2t'are 2or %o$$e%tion and 2ie$d pre>ana$ysis

– Tempora$ ana$yzer disp$ay mode

– =arious per2orman%e vie's

• (tron oints:

— Avai$a#$e good #asi% 2eatures

—Compati#$e 'ith ODA post>pro%essorde2a%to standard 2ormat 2or other too$s

• Feak oints:

—&ri%e

—*n2$e/i#i$ity< user>2riend$iness issues

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Drive estin 6 ;rason (urveor

• "ile outputs in a variet of formats

—B9g$2 #inary $og 2orm< a$$o's %a$$ eventp$ay#a%3)revie' 'ith $ive map disp$ay

—B9mdm 2ormat 2or post>pro%essing

— As%ii 2ormat 2or message ana$ysis

• /nalAer . post6processin softwareprovides linked map, call event, and

messae browsin—provides statisti%s 2or %a$$ events<

parameters< per2orman%e indi%ations

—disp$ays resu$ts in map or %hart 2ormat

• (tron oints:

—&ri%e< 2eatures< avai$a#i$ity< genera$1ua$ity

• Feak oints:

—.o ma-or 2un%tiona$ %omp$aints typi%a$minor #ugs and g$it%hes in ear$y versions

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Drive est ools 6 @ewlett ackard &>72/

• @ &>72/

—One o2 the ne' 3ids on the#$o%3;

— indo's #ased

— =ery user 2riend$y

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Drive estin 6 Other tools• LCC:

—an enhan%ement o2 e/isting mo#i$e

data %o$$e%tion pa%3ages

—&ost>&ro%essing (o2t'are adapted 2or

CDMA

• (/"CO *no photo available+

—(MART(AM CDMA e/tension< possi#$e

adaptation o2 &ROMA( %o$$e%tion too$

—O&A( ana$ysis so2t'are enhan%ements

to add CDMA message 2un%tions

• CO./!CO:

—ne' modu$e 2or e/isting mo#i$e data

%o$$e%tion pa%3ages

—&ost>&ro%essing (o2t'are adapted 2or

CDMA

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Drive estin 6 !oute (election

• (electin Drive !outes

— *denti2y the ma/imum e/pe%ted %overage areaidenti2ied using a propagation predi%tion p$ot9

— Divide the %overage area into regions or %$usters

i2 ne%essary9

— (e$e%t drive routes 'ith the emphasis on main

streets and high'ays 'here %ustomer tra22i% ise/pe%ted to #e high9

— Annotate the route on a map and)or $og9 Ma3e

sure to mar3 any deviations 2rom this route9

%rive routes

should beselected based

on e&pected

customer traffic

patterns.

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Drive estin

• )enchmark !oute

— 0sed as a means o2 determining net'or3per2orman%e and %onsisten%y 'ithout the need 2or

a 2u$$ net'or3 drive9

— This drive route shou$d in%$ude at $east a sing$e

$oop 'ithin the %overage area9

— Care shou$d #e ta3en to in%$ude di22erent %$uttertypes and tra22i% densities9

— This route shou$d a$'ays #e driven in the same

dire%tion and any deviations shou$d #e annotated9

The benchmark

route needs tobe driven an'

time there is a

change to the

network.

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Drive estin 6 est calls

• .arkov Calls

— A test %a$$ in 'hi%h 2u$$< ha$2<

1uarter< and eighth rate 2ramesare generated in a psuedorandommanner

—5y using this Mar3ov a$gorithm<the (5( and the Mo#i$e %ananti%ipate 'hat ea%h ne'

in%oming 2rame shou$d %ontain<and %an there2ore %a$%u$ate FR2or #oth dire%tions9

—(hou$d #e used 2or a$$ testinge/%ept 2or hard hando22#oundaries

Mar3ov %a$$s are avai$a#$e 2or 3#

Rate (et E and E@ 3# Rate (et ?9Mar3ov %a$$s %an #e initiated dire%t$y

2rom the handset 3eypad or #ymost data %o$$e%tion so2t'are9

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)(.9()(

@andset 4

@andset 2

.obile Lo tidy up, restart

Lon .arkov Call Lon .arkov Call

Collect Data QFTP, restart

ime,.inutes

1 41 21 31 4 2

(@ O! . / ! G O H C / L L (

Collect Data

Drive estin 6 Data Collection (trate

• ormall two mobiles are used

— One mo#i$e per2orms $ong Mar3ov %a$$s appro/imate$y E? minutes induration

— The se%ond mo#i$e per2orms short Mar3ov %a$$s appro/imate$y ?

minutes in duration9

— To prevent $arge data $osses< data %o$$e%tion shou$d stop and restart

every ? minutes9

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Data Collection (trate

• /t the )(C:

— (tart $ogging on the hour9— (top $ogging at ? minutes a2ter the hour9

— 0p$oad $ogs and p$a%e 2i$e in the appropriate

date)run dire%tory9

—Resume $ogging at ha$2 past the hour9

— (top $ogging at minutes past the hour9

— 0p$oad $ogs and p$a%e 2i$e in the appropriate

date)run dire%tory9

— Repeat these steps unti$ drive test is %omp$ete9

Each selector

element is

restricted to .($b'tes or

about )*

minutes of

logging on each

element.

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Data Collection (trate

• -n the test vans:

— On the hour< #egin $ogging a $ong Mar3ov %a$$ on one

mo#i$e and short Mar3ov %a$$s on a se%ond mo#i$e9

— At E? minutes past the hour< terminate the $ong %a$$

and reesta#$ish !do not stop $ogging"9

— At ?G minutes past the hour< terminate %a$$s on #oth

mo#i$es9 (top $og at ? minutes past the hour9

— (ave $ogs and prepare to restart $ogging9

— (tart $ogging at ha$2 past the hour #egin #oth $ong and

short Mar3ov %a$$s9

— At G? minutes past the hour< terminate the $ong %a$$

and reesta#$ish !do not stop $ogging"9

— At G minutes past the hour< terminate %a$$s on #oth

mo#i$es9 (top $og at minutes past the hour9

— (ave $ogs and prepare to restart $ogging9

— Repeat these steps unti$ the drive test is %omp$eted9

To prevent

overflow of the

#+# elementdata buffer,

mobile calls

should be

limited to )- to

)( minutes.

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Lesson 3 6 (ummar

Durin this lesson, we have:

• Defined the measurement basis behind ke !" performanceindicators

• Described simulated loadin techni$ues for both the

forward and reverse links%

• &'plained the basic concepts and procedures of mobiledrive testin%

• Described ()( loin concepts and strateies used durin

drive testin%

• Defined an effective data collection strate%

• Calculated the $uantit of data and duration of time

associated with ()( loin%

7/23/2019 1202Lssn3.ppt



Lesson 3 6 (ummar

Durin this lesson, we have:

• Created loin templates%

• (tarted and suspended ()( los%

• Uploaded, copied, and terminated ()( los%

• Obtained a pilot database dump%

7/23/2019 1202Lssn3.ppt


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